CS7321 Winter 1998

PS0 Solution by James Mossman

The images shown below were created with Matlab v4.2 on a Sparc2. The monitor must have been suffering from a contrast/brightness problem. The washed-out images appeared much darker on the Sparc2 that I was using. The washed-out appearance would explain several of the poor results. Use of the 'equalized' image probably would have improved the quality of several images (the 'equalized' image appeared too dark to be useful on the Sparc2).

Input Image	Operations	Output Image
james.rgb (320x200, color) (saved using capture from SGI	Converted to TIFF using imgworks on SGI	james.tif (320x200, color)
james.tif (320x200, color)	Converted to GIF using XV on Sparc2
james.tif (320x200, color)	Converted to grayscale GIF using XV on Sparc2
	Brightened image using MATLAB v4.2 (beta=+60%) brighten.m
	Cropped image to include just face crop.m
	Inverted colormap (GRAYSCALE) of face crop_invert.m
	Cropped image with grayscale equalized equalize.m [adapted from 'imdemo.m']
	Inverted colormap (GRAYSCALE) of 'equalized' face crop_invert.m
	Cropped image embossed emboss.m [adapted from 'imdemo.m'] (See Sparc2 note concerning image quality)
	Low-pass FIR filter (cutoff freq=0.5) lowpass1.m [adapted from 'firdemo.m'] (See Sparc2 note concerning image quality)
	Low-pass FIR filter (cutoff freq=0.1) lowpass2.m [adapted from 'firdemo.m'] (See Sparc2 note concerning image quality)
	High-pass FIR filter (cutoff freq=0.5) highpass1.m [adapted from 'firdemo.m'] (See Sparc2 note concerning image quality)
	High-pass FIR filter (cutoff freq=0.1) highpass2.m [adapted from 'firdemo.m'] (See Sparc2 note concerning image quality)